Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Your room is changing the way your speakers sound — and you can't see it happening
$14.99 · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for SonarRoom: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Limited social features for collaboration
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: High subscription cost
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User discovery can be challenging
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of offline capabilities
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Your room is changing the way your speakers sound — and you can't see it happening. Bass doubles in one corner and disappears in another. Echoes smear the stereo image. The couch might be in the worst possible spot. SonarRoom makes all of it visible. One-time purchase. No subscriptions. No accounts. Your data stays on your device. ONE WALK. COMPLETE PICTURE. Connect your iPhone to your speakers, tap Start, and walk around the room for 3–4 minutes. SonarRoom simultaneously scans your room with AR, plays test tones through your speakers, records the response, and tracks your position — capturing hundreds of measurement points in a single pass. SEE YOUR SOUND IN 3D When you stop, the app builds an interactive 3D acoustic map of your room. Switch between overall quality, bass energy, stereo balance, reverb time, and more. Tap any point to inspect its full acoustic profile. Rotate, zoom, and explore how sound changes from position to position. FIND THE SWEET SPOT SonarRoom evaluates every measured position and ranks the top listening spots — gold, silver, and bronze — scored on frequency balance, stereo imaging, reverb, and bass consistency. Stop guessing where to sit. KNOW EXACTLY WHAT'S WRONG The app automatically detects standing waves, null zones, flutter echoes, comb filtering, speaker-boundary interference, and stereo asymmetry. Each problem is named, explained in plain English, rated by severity, and shown in 3D — so you understand both what it is and where it is. KNOW EXACTLY WHAT TO FIX Every problem comes with prioritized, actionable recommendations: move speakers, add bass traps, apply EQ, reposition your listening spot. Each suggestion includes a predicted improvement percentage so you can focus on what matters most. PROFESSIONAL-GRADE ANALYSIS, NO EXPERTISE REQUIRED SonarRoom uses the same impulse response techniques as professional acoustic measurement systems — sine sweep deconvolution, Schroeder RT60, ISO clarity indices — but presents everything through scores, heatmaps, and plain-language explanations. No acoustics degree needed. FEATURES + Unified AR scan + acoustic measurement in one walk + 3D acoustic heatmap with 6 switchable metrics + Sweet spot detection with ranked positions + Automatic problem detection with plain-English explanations + Full 20 Hz – 20 kHz frequency response at every point + Auto-generated parametric EQ profiles + Spectral decay (waterfall) plots + Before/after session comparison + Built-in microphone correction (iPhone XS – iPhone 17 Pro Max) + Export: CSV data, JSON analysis, WAV impulse responses, PDF reports SPEAKER LAYOUTS Stereo · 2.1 · 5.1 · 7.1 · Dolby Atmos · Custom COMPATIBILITY Best: iPhone 14 Pro+ with LiDAR (centimeter-accurate room scanning) Great: iPhone 12+ (monocular depth, full measurement capability) Supported: Any iOS 17 device (manual 2D room editor) Connect via Bluetooth, AirPlay, aux cable, USB, or HDMI. WHO IT'S FOR Home theater owners optimizing subwoofer placement and seating · Music producers finding the flattest monitoring position · Audiophiles quantifying room impact on their system · Podcast producers finding the driest recording spot · Anyone curious about how their room shapes their sound
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.